Sun Microsystems has long been synonymous with leading edge technology. Now, after years of telling the world "The Network is the Computer", Sun is poised to become the leader in the emerging network-driven economy. Forward thinking organizations are looking to Sun to lead them into the dot com future. And Sun takes its leadership commitment seriously.PRODUCT FEATURES:Sun StorEdge 9990 Cache Data Path Expansion Kit;2 printed circuit boards for installing cache memory;32GB cache can be installed on each printed circuit board;For the SE9990 integrated disk controller and array frame unit (DKC510I).